The Power Bank is by its dimensions ago really perfect, because it can be really always taken easily. Smaller than a pack of cigarettes, and the weight is so low that you would not notice. The capacity of 5200 mAh is sufficient to recharge my iPhone 5 full 2 x, thus ensuring that I have never desperately searching for a power outlet on the road, because the battery in the phone itself coming to an end.
Another important feature that has prompted me to buy the Simian Power Bank 5200 mAh, is waterproof, stain-resistant and robust processing. In my free time I am often by mountain bike on the road. Then mostly stayed in tents or sometimes outdoors. Before it starts to rain it is of course never sure and should fall the Power Bank can tolerate.
Overall, the Simian PowerUp 5200 mAh is a well-made product, and provides more power than I expected for the reasonable price.